Command Line Reference Guide

fefd
Enable Far-End Failure Detection on an interface, set the FEFD interval, or select the FEFD mode.
S6000
Syntax
fefd {disable|interval|mode {aggressive|normal}
Parameters
disable Enter the keyword disable to disable FEFD for the specified
interface.
interval Enter the keyword interval, followed by a value to specify the
FEFD interval in seconds. Range is from 3 to 300. Default is
15.
mode Enter the keyword mode followed by the mode type to
specify the FEFD mode.
• normal: Change the link state to “unknown” when a far-
end failure is detected by the software on that interface.
When the interface is placed in an “unknown” state, the
software brings down the line protocol.
• aggressive: Change the link state to “error-disabled”
when a far-end failure is detected by the software on that
interface. When an interface is placed in an “error-
disabled” state, you must enter the fefd reset
command to reset the interface state. Range is normal or
aggressive. Default is normal.
Defaults Disabled.
Command
Modes
INTERFACE
Command
History
This guide is platform-specific. For command information about other platforms,
refer to the relevant Dell Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version 9.0.2.0 Introduced on the S6000.
Version
8.3.19.0
Introduced on the S4820T.
Version 8.3.11.1 Introduced on the Z9000.
Version
8.3.12.0
Introduced on the S4810.
Usage
Information
When you enter no fefd for an interface and fefd-global, FEFD is enabled on
the interface because the no fefd command is not retained in the configuration
file. To keep the interface FEFD disabled when the global configuration changes,
use the fefd reset command.
Layer 2
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